5(4)-CHLORO-1-(2,4-DINITROPHENYL)PYRAZOLES FROM 2,4-DINITROPHENYLHYDRAZONES OF CHLOROVINYL KETONES AND β,β-DICHLOROACROLEIN

Authors

  • Г. В. Боженков A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk 664033
  • Г. Г. Левковская A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk 664033
  • А. Н. Мирскова A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk 664033
  • Л. И. Ларина A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, Irkutsk 664033

DOI:

https://doi.org/10.1007/8242

Keywords:

bromoacrolein, dichloroacrolein, 2, 4-dinitrophenylhydrazones, 1-(2, 4-dinitrophenyl)pyrazoles, 4(5)-chloro-1-(2, chlorovinyl ketones, heterocyclization

Abstract

A method has been developed for obtaining 3-alkyl(phenyl)-4(5)-chloro-1-(2,4-dinitrophenyl)pyrazoles from appropriate dinitrophenylhydrazones of 1-chloro-, 1,2-, and 2,2-dichlorovinyl ketones by heating the latter in polyphosphoric acid. The structure of the pyrazoles was studied by IR and  1H NMR spectroscopy.

How to Cite
Bozhenkov, G. V.; Levkovskaya, G. G.; Mirskova, A. N.; Larina, L. I.  Chem. Heterocycl. Compd. 2005, 41, 854. [Khim. Geterotsikl. Soedin. 2005, 1012.]

For this article in the English edition, see DOI 10.1007/s10593-005-0238-9

 

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Published

2023-10-31

Issue

No. 7 (2005)

Section

Original Papers